JP6371097B2 - Tire inflation equipment - Google Patents

Description

  The present invention is a tire inflation device that can supply a wheel including a wheel rim and a tubeless tire attached to the wheel rim to the tire inflation device. The tire inflation device is disposed on the machine frame and the machine frame. Tire filling bell and support / sealing device for sealing or sealing the filling chamber, the tire filling bell being interchangeable with a filling plate and a plurality of different diameters Having a separate filling ring that can be selected from the filling ring and that can be moved to a centering position relative to the axis of rotation of the wheel, and that contacts the first edge of the filling plate and the filling ring arranged in the centering position The filling plate can be moved along the axis of rotation together with the filling ring The second edge of the filling ring disposed in centering position facing away a tire inflation system of the type that can hit the side of the tire. The invention also relates to a method of filling a tubeless tire attached to a wheel rim.

  During automatic continuous production, automotive wheels with tubeless tires are usually filled with compressed air at an automatic tire inflation station, which is an integral part of the assembly line. In this process, the tire mounted rim is placed on a suitable support plate, which seals the wheel from below during the filling process. A filling bell is placed on the upper side of the tire, which seals the tire and rim from above, and the tire sidewall is pushed down through the filling bell during the filling process, eventually An annular gap is formed between the tire bead and the rim, and the compressed air introduced into the filling bell can flow into the tire through the annular gap. The compressed air flowing in the tire presses the tire against the base plate and the filling bell with a considerable force. Once the filling pressure is reached, the filling bell is raised so that the tire sidewalls are axially separated from each other and eventually the tire beads occupy their respective seating positions on the rim. For the purpose of such a filling operation, the filling bell, on the one hand, must have an opening with a diameter large enough that it does not contact the rim but can be placed on the rim. On the other hand, the diameter of the opening should not be so large that the filling bell touches the upper sidewall of the tire that is radially away from the highest point of the tire. The filling bell in this case prevents the tire from moving in the radial direction, so that the tire bead may not spring back exactly into its seat. Thus, the filling bell is only suitable for a limited range of automotive wheel sizes.

  In the tire inflation station known in the art from DE 10007019 (A1), the wheel / tire assembly is stored in the tire inflation station, which is the bottom side of the tire. Positioning is performed with the surface in close contact with the base plate. The tire filling bell is placed on the upper side of the wheel / tire assembly, this bell is lowered for the tire inflation process and the tire sidewall is pushed away from the annular edge of the rim, so that An annular space is formed between the tire sidewall and the wheel rim, and the tire is filled with compressed air through the annular space. Wheels with different tire sizes and / or rim sizes can be filled to a limited extent because two filling bells with two different diameters are fitted together.

  In order to expand the range of tire sizes to be filled at the same tire inflation station, a tire inflation station of the type referred to at the beginning of this specification and known from EP 1671820 (B1) is: A tire filling bell having a plurality of filling rings of different diameters is used, and a filling ring of a suitable diameter is used depending on the size of the tire. The filling rings are annularly fixed to a holder on the central movement device, and these filling rings can be moved circularly by this movement device to a centering position in the axial direction relative to the axis of rotation of the wheel. Each filling ring moved to the centering position, together with the filling plate, forms a filling bell and moves such filling ring against one side of the tire to be inflated. Can do. The space required for this known tire inflation station is considered inconvenient.

  The tire inflation station of DE 102009046195 (B3) is a filling device in which a carrier plate is arranged on the underside, the carrier plate moving back and forth along an axis between several positions. The filling ring is fixed on the lower surface of the carrier plate in a gas-tight state and is positioned on the front and back of each other in the gas-tight state as seen in the direction of movement, and the carrier plate is in the filling ring, respectively. The through-opening, wherein another of the through-openings is a filling opening for a filling device disposed on the upper side of the carrier plate at each of a plurality of positions of the carrier plate. Connected.

German Patent Application Publication No. 10007019 (A1) Specification European Patent No. 1671820 (B1) German patent 102009046195 (B3) specification

  It is an object of the present invention to design a specific type of tire inflation device suitable for a wide variety of tire sizes with reduced space requirements. The tire inflation device should also be economically manufacturable, reliable and require little care, and should ensure high filling accuracy.

  This object is achieved according to the invention by a tire inflation device having the features set forth in claim 1. Advantageous embodiments of the tire inflation device are set forth in the separate claims.

  According to the present invention, a tire inflation device capable of supplying a wheel including a wheel rim and a tubeless tire attached to the wheel rim to a tire inflation device includes: a machine frame; and a tire filling bell disposed on the machine frame. And a support / sealing device for sealing the filling chamber. The tire filling bell has a separate filling ring which can be selected from a filling plate and a plurality of interchangeable filling rings with different diameters and which can be moved to a centering position relative to the axis of rotation of the wheel The filling plate and the first edge of the filling ring arranged in the centering position can be brought into contact with each other, the filling plate can be moved along with the filling ring along the axis of rotation and away from the filling plate The second edge of the filling ring, which is arranged in the facing centering position, can be applied to the side of the tire. The tire inflation device further includes a filling ring magazine including a magazine rack, and the magazine rack includes holders formed by a plurality of magazine guides located in mutually parallel planes intersecting the rotation axis, and each of the holders. The filling ring can be held in the magazine guide so that the filling ring can be moved, and the magazine guide for each of the holders is filled by moving the magazine rack and the filling plate relative to each other in the direction of the axis of rotation. A plurality of transfer positions connected to a filling plate guide arranged on the plate can be reached, a filling ring arranged in a magazine guide arranged in the transfer position in the filling plate guide by the conveying device, and It can be transported to a centering position in this guide.

  In the tire inflation device of the present invention, the filling rings having different diameters are preferably arranged one above the other or adjacent to each other while being stacked in the magazine, and the magazine is filled by moving the filling bell. It is arranged outside the work area necessary to supply the power wheel. The magazine design requires very little space to provide the various filling rings, and the individual filling rings can be transported to a centering position on the filling plate by a single and cost-effective device. Has the advantage. The filling ring need not be very tall, which means that the amount of compressed air required during filling can be minimized.

  In order to move the magazine rack and the filling plate to the transfer position for feeding and discharging the filling ring, it is only necessary to move the filling plate or the magazine rack in the direction of the axis of rotation. When the filling plate is displaced for this purpose, the displacement path of the filling plate must be increased according to the number of transfer positions. A complex device that transports the filling ring into the filling plate guide is also necessary in this operation.

  Therefore, in a preferred embodiment of the present invention, it is necessary that the magazine rack can be moved to the transfer position in the direction of the rotation axis by the magazine driving device arranged on the magazine rack. This design has the advantage that the same transfer position can always be accessed using a magazine, which can be the rest position of the filling plate. Thus, only one transport device working in the vicinity of one transfer position is required to push each filling ring to the centering position under the filling plate.

  In the movable magazine rack, the magazine guide arranged at the transfer position is connected to the filling plate guide by an intermediate guide provided between the magazine guide and the intermediate guide, and the intermediate guide is attached to the fixed machine frame. This also proved advantageous. The resulting fixed intermediate guide reduces the tolerance requirements on the alignment of the movable guide and the connection point, and this intermediate guide can increase the distance between the machine frame and the tire inflation device As a result, there will be enough space to supply the wheel, enough space for the instrument to hold and center the wheel, and enough space to move the filling plate.

  In another proposed embodiment of the invention, the guides of the filling ring may each have two parallel guide rails, the filling ring may comprise a frame, which frame is on opposite sides. A roller or sliding block that is rotatably mounted and forms a positive guide together with a guide rail. The guide of the filling ring preferably has a guide rail with a U-shaped profile, the hollow profile sides of the guide rail facing each other, and a roller or slide The moving block fits into the hollow profile side when the frame of the filling ring is placed between the guide rails. This design of the guide ensures safe support of the filling ring and facilitates its movement.

  According to the invention, the conveying device for conveying the filling ring from the magazine to the operating position under the filling plate may be arranged on the machine frame, which conveying device may drive the drive head, The drive head can be movably guided on a drive head guide parallel to the magazine guide, and the drive head can be coupled to a filling ring arranged in a holder in the transfer position. Various linear drive devices can be used to drive the drive head. It is particularly advantageous if the transport device has a crank mechanism including a crank and a connecting rod driven by a motor, the connecting rod being adapted to transmit the rotational movement of the crank to the drive head. This design of the transport device allows each fill ring to be quickly displaced from one end position to another in the guide, and the crank mechanism accelerates or decelerates the transport ring being transported. To produce a consistent and smooth force transmission.

  According to the invention, the drive head of the conveying device has a coupling element, which cooperates with an opposing coupling element arranged on the filling ring. In this case, the coupling element and the counter coupling element are advantageously designed such that the coupling element and the counter coupling element can be engaged with each other or separated from each other by movement relative to each other in the direction of the axis of rotation. . When the magazine rack and the filling plate are moved in the direction of the rotation axis, when the filling plate or the magazine rack leaves the transfer position, the connected filling ring is automatically disconnected from the drive head.

  According to the invention, the drive head guide is advantageously arranged on the outer side of the magazine rack facing away from the magazine guide on the inner side of the machine frame facing the magazine rack. Is good. The carrier may be fixed to the filling ring so as to be connectable to the drive head, and the carrier grips around the outside of the magazine guide and is located on the outside of the magazine frame when the filling ring is arranged in the magazine. Supports the outer side of the element. In addition, this design can create a motion region in which a crank and a connecting rod that connects the drive head and the crank to each other can be disposed between the magazine rack and the machine frame.

  In another proposal of the invention, the magazine frame may be movably guided in a frame guide parallel to the axis of rotation on the machine frame. Such guides define the movement region of the magazine rack in a direction perpendicular to the axis of rotation and all the magazine guides are located at the same slight distance from the adjacent intermediate guides or filling plate guides at these transfer positions. Like that.

  According to the invention, an advantageous magazine drive has a spindle that can be driven in rotation and is provided with an external thread, the spindle being engaged with a nut with an internal thread by means of the external thread, the spindle being It is supported on the magazine rack so that it cannot rotate. The spindle should be arranged so that it is suspended vertically and should be designed to support the magazine rack. For this purpose, the spindle supports the magazine rack in a vertically suspended state, and the spindle is fixed axially in an axial bearing supported on a transverse member of the machine frame. It may be provided rotatably and the axial bearing and the transverse member are arranged so that the central axis of the spindle extends near or into the center of gravity of the magazine rack loaded with the filling ring. The fact that the spindle is located near the center of gravity greatly reduces the generation of shearing and clamping forces within the rack guide system and facilitates movement of the magazine rack.

  In order to avoid the occurrence of clamping and shear forces in the guide or on the spindle, the spherical bearing surface supports the axial bearing of the spindle on the transverse member and the nut on the transverse beam of the magazine rack. It can also be useful that the central part of the supporting and bearing surface is located on the central axis of the spindle. As a result, the spindle and the nut can be aligned with each other, and a restraining force caused by a change in the shape of the rack when subjected to a load can be avoided.

  Each filling ring has at least one positioning hole into which a positioning pin that can be moved on the filling plate by an actuator can be inserted when one of the filling rings is in a centering position on the filling plate. good. Also, the pins that can be moved by the actuator can be removed from the filling plate and aligned with the filling ring before being secured to the filling plate.

  A clamping device may also be arranged on the filling plate, which is used for clamping a filling ring arranged on the filling plate in a centering position to the first edge of the filling plate. By clamping the filling ring, the filling ring becomes held in a fixed position on the filling plate during the inflation process and while the filling plate is in motion and is placed between the filling ring and the filling plate. This ensures that the seal remains clamped in place and remains sealed under all operating conditions.

  The clamping device may be arranged on the upper side of the filling plate facing away from the filling ring, the clamping device having a clamping arm that can be moved perpendicular to the filling plate, The lower surface of the clamp anchor of the filling ring protruding beyond the edge of the filling plate and inclined at the end is gripped. Each clamp anchor is preferably constituted by a carrier, and the filling ring can be connected to the drive head by this carrier.

  According to the invention, the tire filling bell is moved in the direction of the axis of rotation by one hydraulic control cylinder fixed to the machine frame and two pneumatic cylinders fixed to the machine frame and arranged parallel to the control cylinder, The piston rod of the control cylinder and the piston rod of the pneumatic cylinder are fixed to the filling plate, the control cylinder is connected to a hydraulic control circuit, and the movement path and movement speed of the tire filling bell generated by the pneumatic cylinder are controlled by this hydraulic control circuit. can do. Accurate control of the movement of the tire filling bell caused by the pneumatic energy is possible in this way. The hydraulic control cylinder and its piston rod may also be rigidly connected to the machine frame or the filling plate, thus ensuring a parallel displacement of the filling bell.

  The invention will be described in detail below on the basis of an embodiment of the invention shown in the drawings.

It is a perspective view of the tire inflation apparatus of the present invention. It is the figure which looked at the tire inflation apparatus of FIG. 1 from the top. It is a perspective view which shows the guide in the tire inflation apparatus of FIG. 1 independently. FIG. 3 is a cross-sectional view taken along line AA of FIG. 2 of the tire inflation device of FIG. 1. It is a perspective view which shows independently the conveying apparatus for the tire inflation apparatus of FIG. It is detail drawing of a tire inflation apparatus, and is a figure which shows a filling plate from the top. FIG. 7 is an enlarged view of detail X in FIG. 6. FIG. 3 is a partial view of the tire inflation device showing a cross-section of the filling bell along the line BB in FIG. 2. It is an enlarged view of the detail Y of FIG. FIG. 7 is an enlarged view of a cross section taken along line CC in the vicinity of a detail X in FIG. 6.

  FIG. 1 shows a tire inflation device 1 with a machine casing 2 whose front side wall has been removed in the viewing direction to show details of a magazine 3 arranged behind it. The tire inflation device 1 includes a tire filling bell 4 and a support / sealing device 5, and a wheel having a tire attached in advance is supplied to the support / sealing device 5 by the transport device 6, and one side portion of the transport device is The support / sealing device 5 is mounted horizontally on the plate-like table 7. The tire mounting station is usually arranged upstream of the tire inflation device 1, and the tire is mounted on the wheel rim at this mounting station.

  The supporting / sealing device 5 and the conveying device 6 are described in the specification of European Patent No. 1 1 2572 (B1), the contents of which are referred to here. The support / sealing device 5 is composed of a number of sections. The plate-like table 7 is subdivided into a plurality of sections and supported on the machine frame. Its diameter is larger than the diameter of the support surface of the largest tire to be inflated. The transport device 6 has two transport means, for example, a transport chain or a belt, which extend in a horizontal transport plane in a state of being spaced apart from each other, and these chains or belts are attached to the machine casing 2. In the transport stage, the wheel is transported to the central position below the tire filling bell 4 with the transport device 6 in the raised position and the table 7 is divided, and then the wheel is supported by lowering the transport device 6. -Place on the table 7 of the sealing device 5. Next, the conveying device 6 is lowered, and the table 7 of the support / sealing device 5 is closed to form a sealing surface. After centering the wheel by the centering device 8, the tire filling bell 4 is brought into contact with the deflated tire, and the tire is inflated with the compressed air that has flowed into the tire filling bell 4. After inflation, the tire filling bell 4 is lifted off the wheel, and the wheel is conveyed forward.

  As can be seen in FIG. 1, the tire filling bell 4 is in a centering position above the support and sealing device 5. The tire filling bell 4 has a filling plate 10 and a cylindrical filling ring 11 with a substantially flat lower surface, which is fixed to the lower surface of the filling plate 10, which is a cylindrical filling ring. It is fixed to the lower surface of the filling plate 10 so that it can be removed and replaced with another filling ring of a different diameter. The filling plate 10 is provided with a reinforcing rib on the upper side thereof, and this filling plate is fixed with a hydraulic control cylinder 14 at a central position and piston rods of two pneumatic cylinders 15 arranged on both sides of the control cylinder 14. It is firmly connected to the yoke 12. The filling plate 10 has two parallel edges to which a mounting rail 16 and a guide rail 17 fixed to the mounting rail 16 are respectively mounted in a mirror image arrangement relationship and a design relationship, and the mounting rail and the guide rail are Together, they form a filling plate guide 18. The guide rail 17 has a U-shaped profile, and these hollow profile sides face each other. The filling ring 11 is provided in the guide rail 17 by rollers which are rotatably fixed to mutually parallel longitudinal sides of the frame attached to the filling ring 11.

  1 and 3 show the tire filling bell 4 in the rest position, in which the intermediate guide 19 is connected to the filling plate guide 18, which also has a U-shaped guide rail, The intermediate guide is an extension of the filling plate guide 18 in the direction of the magazine 3. The intermediate guide 19 is firmly connected to the machine casing 2.

  In the position shown in FIG. 3, the end of the magazine guide 21 ′ arranged in the magazine rack 20 is in the transfer position on the intermediate guide 19 on the side of the intermediate guide 19 facing away from the filling plate guide 18. is there. The magazine rack 20 accommodates a plurality of additional magazine guides 21 that are parallel to each other, and these magazine guides are all designed uniformly and each have a U-shaped guide rail 22. The U-shaped guide rail has hollow deformed sides facing each other and is fixed to the mounting rail 23. The mounting rails 23 are attached to the inner sides of two mutually parallel frame stringers 25 that are connected to each other by a top transverse beam and a bottom transverse beam 26. The mounting rails 23 are wide at the rear end portions, and these mounting rails are separated from the frame stringer 25 together with the guide rails 22 in a state of being fixed to the frame stringer 25 on the magazine rack 20. When held, it extends to a vertical plane located adjacent to the end of the intermediate guide 19 facing the magazine 3. By displacing the magazine rack 20 vertically, all the magazine guides 21 can be moved to a transfer position arranged directly opposite to the intermediate guide 19.

  As can be understood from FIG. 4, the magazine rack 20 is guided in the rack guide 28 on the machine frame 2 so that the magazine rack 20 can be moved in the vertical direction. The rack guide 28 has two opposite guide rails 29 fixed to the outer side of the frame stringer 25, and these guide rails extend in the vertical direction. The guide rails 29 are provided in a sliding block 30 so that they can move in the longitudinal direction. These sliding blocks are fixed to the side wall 32 of the machine frame 2 by spacers 31. The magazine rack 20 is moved by a magazine driving device 34 fixed to a lateral member 35 of the machine casing 2, and this magazine driving device has a spindle 36 having a male screw, and one end portion of the spindle 36 is laterally arranged. The member 35 is rotatably attached. The spindle 36 is provided with a female screw by its male screw and engages with a nut 37 supported on the transverse beam 26, and this spindle is driven to rotate by a reversible motor 38. The nut 37 is connected to the transverse beam 26 so that it cannot rotate.

  A transport device 40 is arranged on the magazine rack 20 for transporting the filling ring 11 from the magazine 3 to the bottom of the filling plate 10 or from the bottom of the filling plate 10 to the magazine 3. The conveying device 40 substantially comprises a drive shaft 41 extending horizontally on the rear side of the magazine rack 20, and this drive shaft is rotatably attached to the side wall 32 of the machine casing 2. A reversible gear motor 42 is attached to the outer side portion of the machine frame 2 by a flange, and the gear motor 42 drives the drive shaft 41 to rotate.

  In particular, as shown in FIG. 5, the drive shaft 41 has two cranks 43 extending radially in the same direction near the mounting end of the drive shaft 41, and these cranks are connected to the connecting rod 44. A free end is rotatably connected. The crank 43 and the connecting rod 44 each move in a free space inside the side wall 32, and this space is formed by the spacer 31 between the side wall 32 and the guide rail 29 of the rack guide 28. The ends of the connecting rod 44 farthest from the crank 43 are connected to the drive head 45 by pivot joints, and the drive head 45 is parallel to the magazine guide 21 and the filling plate guide 18. Is guided so as to be moved along the drive head guide 46. The drive head guide 46 is fixed to the inside of the side wall 32, and the drive head guide includes an attachment rail 47 and a guide rail 48 fixed to the attachment rail. The guide rail 48 is connected to the drive head 45. It is gripped by the attached sliding block 49.

  The drive head 45 forms a coupling element 50 on its side facing away from the drive head guide 46, which coupling element is connected to an opposing coupling element provided on the filling ring 11. ing. The coupling element 50 is designed so that only a force in the direction of movement of the drive head 45 can be transmitted to the opposing coupling element.

  FIG. 5 shows the movements that can be performed by the transport device 40. The continuous line indicates an intermediate position where the drive head 45 is located in the vicinity of the intermediate guide 19. The intermediate guide 19 is fixed to the mounting rail 47 at a certain distance from the guide rail 48 by the elbow 24, so that the drive head 45 can pass through the intermediate guide 19 without being obstructed. It is like that. The dashed lines indicate the two end positions of the transport movement that can be performed by the drive head 45. In the extended end position of the crank 43 and the connecting rod 44, the drive head 45 is located at the end of the drive head guide 46 located far from the drive shaft 41 and in an intermediate position on both sides of the filling plate 10. Is arranged. In the other end position where the crank 43 and the connecting rod 44 are located adjacent to each other, the drive head 45 is adjacent to the center of the magazine guide 21 of the magazine 3 which can be connected to the filling ring 11 arranged in the magazine 3. Are arranged.

  3 and 4 show the magazine 3, in which the filling ring 11 is located at a fixed position inside the magazine. The magazine 3 has seven magazine guides 21 arranged one above the other. In FIG. 3, the upper six of these guides each contain a filling ring 11. In FIG. 4, the four magazine guides 21 from the top are in an empty state. Each filling ring 11 consists of a cylindrical annular body 51 which is fixed at both ends in the holes of the frame 52, which cylindrical annular body forms a first edge. An annular seal 53 is provided on the upper surface. The frames 52 are formed symmetrically, and these frames have arms 54 that are parallel to each other and to which a plurality of rollers 55 that are rotatably provided around axes that are parallel to each other are attached. The distance separating the rollers 55 provided on the opposite sides of the frame 52 from each other is the same for all the frames 52 and is a uniform distance between the guide rails 22 located on the opposite sides of the magazine guide 21. As a result, the rollers 55 can fit into the guide rails 22 in an optimal manner and can roll into these rails with minimal friction. ing.

  A carrier 56 is secured to approximately the center of each of the two arms 54 of the frame 52, and the carrier 56 is U shaped upside down, the upper side of which is adjacent guide rail 22 and mounting. The outer periphery of the rail 23 is gripped. On the outer side of the carrier 56, an opposing coupling element 57 is provided, which extends in the direction of the filling ring axis. The carrier 56 further has a protruding shoulder 58 on its inward side facing the center of the filling ring, which forms a clamping anchor to which a clamping device arranged on the filling plate 10 can be applied. ing.

  The opposing coupling element 57 of the carrier 56 of the filling ring 11 is connected to the coupling element 50 provided on the drive head 45 when the drive head 45 of the conveying device 40 is in the rear end position as shown in FIG. Engagement and vertical movement of the magazine frame 20 bring the filling ring 11 ′ to the transfer position, in which the magazine guide 21 ′ holding the filling ring 11 ′ is located directly opposite the intermediate guide 19. This applies to the fourth magazine guide 21 'and the fourth filling ring 11' counted from the top in FIG.

  On the other hand, when the third filling ring 11 ″ from the top is transported to the filling plate 10 by the transporting device 40, the magazine rack 20 has the magazine guide 21 when the transporting device 40 is in the position shown in FIG. The center-to-center distance between them must be lowered, so that the opposing coupling element 57 of the fourth filling ring 11 'moves down and disengages from the coupling element 50 of the drive head 45 and is located above this. The counter coupling element 57 of the third filling ring 11 ″ engages the coupling element 50 of the drive head 45. Similarly, by vertically moving the magazine rack 20, each filling ring 11 accommodated in the rack can be connected to the drive head 45 of the transport device 40, and then the magazine guide is driven by driving the transport device 40. It can be pushed out from 21 and pushed into the filling plate guide 18 via the intermediate guide 19. This allows the filling ring 11 to move easily and without being caught in the guide, since the conveying device 40 acts simultaneously on both arms 54 of the filling ring 11 being conveyed.

  FIG. 4 shows the arrangement state of the filling ring 11 in the magazine guide 21 of the magazine rack 20 and the manner in which the magazine rack 20 is guided and supported on the side wall 32 of the machine frame 2. The magazine rack 20 in this figure contains five filling rings 11, each filling ring having a different diameter, and each filling ring is guided with the rollers 55 positioned on the arms of these frames 52. It is provided in the rail 22. The magazine guide 21 arranged at the transfer position is empty. The guide rails 22 are fixed to the guide rails 22 in a state of being supported on mounting rails 23 that are respectively fixed to two mutually parallel frame stringers 25. The transverse beams 26 and 27 connect the frame stringers 25 to each other. The frame stringers 25 are attached to the rear side of the magazine rack 20 and are connected to each other by struts 59, 60 extending laterally and orthogonally, which provide additional stability to the magazine rack 20. Yes.

  Guide rails 29, which are guided to allow longitudinal movement in the sliding block 30, are arranged on the outer side of the frame stringer 25. Spacers 31 connect the sliding block 30 to the side walls 32 of the machine frame 2, and these spacers are free spaces in which the cranks and connecting rods of the transport device 40 can enter between the side walls and the magazine rack 20. Is provided. The magazine rack 20 is held by a nut 37, which is held so that it cannot rotate and is supported on the transverse beam 26 by a bearing 62 with a spherical support surface. The nut 37 engages a rotatable spindle 36 by its thread, and the spindle 36 is supported on a lateral member 35 that is connected to the side wall 32 by a bearing 61 with a spherical support surface. The spindle 36 is rotatably mounted on a bearing 61 by means of an axial roller bearing, the spindle being connected to a motor 38 by a coupling 63, which is also fixed to the transverse member 35. By rotating the spindle 36 using the motor 38, the magazine rack 20 supported only in the vertical direction only by the spindle 36 can be moved up and down. The axis of the spindle 36 is located near the center of gravity of the magazine rack 20, thus minimizing the shear force applied to the rack guide.

  6 and 7 show the conveying device 40 in the extended end position, in which the filling ring 11 is arranged in a centering position under the filling plate 10. Drive heads 45 connected to the connecting rods 44 by means of pivot joints are guided in guide rails 48 by means of sliding blocks 49, which are connected to opposing connecting elements 57 of the carrier 56 by means of connecting elements 50. The carrier 56 shown from above in FIG. 5 is fixed to the frame 52 of the filling ring 11 by screws. A slot is provided in the center of the coupling element 50, and a rib 64 formed by the opposing coupling element 57 is fitted into this slot. The opposing coupling element 57 is also gripped by the projecting strip 65, which is arranged on both sides of the coupling element 50.

  The filling ring 11 is provided in the filling plate guide 18 by a roller 55 attached to the frame 52. The upper arm of the guide rail 17 of the filling plate guide 18 has been removed in the figure so that the roller 55 can be seen. An actuator 66 for actuating the positioning pins and a clamp device 68 actuatable by the actuator are arranged on the upper side of the filling plate 10, and the operating modes of these actuators will be described in detail below.

  FIG. 9 shows a detail Y of the filling plate 10 and the section of the filling ring 11 arranged on the filling plate 10 (including the section of the frame 52 with the roller 55 attached to the frame 52). The roller 55 is disposed in the guide rail 17. The guide rails 17 are connected to the filling plate 10 by means of mounting rails 16 and the fixing areas of the mounting rails are also shown here in section. The actuator 66 is arranged on the upper side of the filling plate 10 facing away from the filling ring 11, which has a piston 69 which can be actuated by the action of air pressure, which piston has a positioning pin 70. It has a double function for moving. The positioning pin 70 is disposed in a hole provided in the filling plate 10, and the positioning pin protrudes from the hole at the positioning position as shown in the figure. The positioning pin has an end portion of the filling ring 11. It fits in a positioning hole 71 provided in the frame 52. Such a fit is only possible when the filling ring 11 is in the centering position on the filling plate 10, which is detected by a sensor.

  The filling ring 11 can be aligned with the filling plate 10 by a second diametrically arranged actuator 66 in a similar manner within the second positioning hole. Thus, an unambiguous and reliable positioning of the filling ring 11 with respect to the filling plate 10 in the centering position can be ensured by both actuators 66.

  In order to replace the filling ring 11, the positioning pins 70 are removed from the holes in the filling plate 10 by reversing the actuator 66, so that each filling ring 11 is not obstructed in the filling plate guide 18 relative to the filling plate 10. So that it can be displaced.

  In order to seal the filling ring 11 to the filling plate 10 and avoid relative movement between the filling ring 11 and the filling plate 10 during operation, the filling ring 11 is positioned by the positioning pin 70 and then filled. The ring 11 is clamped by the clamping device 68. The two clamping devices 68 are arranged centrally on the edge of the filling plate 10 adjacent to the guide rails 17 of the filling plate guide 18 and thus arranged immediately adjacent to the carrier 56 arranged on the filling ring 11. Is done. As shown in FIG. 10, each clamping device 68 has a clamp arm 73 that is flush with the edge of the filling plate 10 and parallel to the filling plate 10, on the outer side of the clamping arm. Is provided with a groove 74 which forms a clamping surface 75 parallel to the filling plate 10. In the release position, the lower end of the clamp arm 73 is located on the filling plate 10, and for clamping, the clamp arm 73 is moved vertically upward to the filling plate 10 by an actuator 76 operable by the action of air pressure. good.

  The carriers 56 of the filling ring 11 located adjacent to the clamping device 68 each have a protruding shoulder 58 on their sides facing the edge of the filling plate 10. The shoulder 58 protrudes over a certain distance on the edge of the filling plate 10, and this shoulder fits into the groove 74 of the clamp arm 73 of the clamping device 68. When the clamping device 68 is activated, the shoulder 58 hits the clamping surface 75 and the carrier 56 is entrained during the operation of the clamping arm 73. In this way, the filling ring 11 firmly connected to the carrier 56 is attracted to the filling plate 10 with the first edge of the filling ring having the seal 53 and is thus firmly clamped to the filling ring 10. The actuators of the clamping device 68 remain in the clamping position while the filling bell is in operation, and these actuators are only released to replace the filling ring 11.

  Prior to clamping firmly, the first edge of the filling ring 11 with the seal 53 is placed at a small distance from the filling plate 10. This distance prevents the seal 53 from touching or touching the filling plate 10 while supplying or removing the filling ring 11 when the filling plate 10 may be damaged. It is advantageous. Therefore, during clamping, the filling ring 11 is displaced towards the filling plate 10 by a clamping distance corresponding to the above-mentioned distance. The roller 55 in the guide rail 17 of the filling plate guide 18 must also be able to move this clamping distance. Accordingly, the guide rail 17 of the filling plate guide 18 has an excessive width corresponding to the whole or at least the region in which the roller 55 is located in the centering position, or the roller 55 may interfere with the clamping of the filling ring 11. It has a U-shaped contoured dent so that it cannot.

  FIG. 8 shows the arrangement of the control cylinder 14 and the two pneumatic cylinders 15 in the upper part of the tire inflation device 1. The control cylinder 14 disposed in the center is fixed to a bridge girder (bridge girder member) 78, and the bridge girder connects the two side walls 32 to each other. The box bridge girder 78 has openings on both sides of the control cylinder 14, and the pneumatic cylinder 15 passes through the openings. The pneumatic cylinder 15 is connected to an upper end portion of the cylinder support 79 by a joint, and these supports are fixed to the side wall 32 and the bridge girder 78 by an anchor plate 80. The piston rod 81 of the pneumatic cylinder 15 is connected to the end of the yoke 12 by a joint, and the yoke 12 is fixed to the filling plate. The articulated suspension arrangement of the pneumatic cylinder 15 and these piston rods 81 has the effect of adapting the movement of the filling plate 10 so that the pneumatic cylinder 15 avoids restraining forces. The piston rod 82 of the control cylinder 14 is rigidly connected to the yoke 12, thus forming an axial guide for the filling bell formed by the filling plate 10 and the filling ring 11. The axis of the control cylinder 14 is located in the center of the centering position of the filling ring 11 and this axis coincides with the rotational axis of the wheel which is arranged on the support / sealing device 5 and centered with respect to it. ing. The control cylinder 14 and the pneumatic cylinder 15 exhibit a double action. The pneumatic cylinder 15 is filled with compressed air in any direction of movement in order to move the tire filling bell 4. The control cylinder 14 is connected to a hydraulic control circuit, which is used to control the movement of the tire filling bell 4 when the tire filling bell 4 is reacting against the force of the pneumatic cylinder 15. Accurate positioning of the tire filling bell 4 relative to the tire to be inflated and control of the speed of movement of the tire filling bell 4 can also be achieved by a hydraulic control circuit.

  The tire inflation device described above is suitable for inflating tires for a wide range of wheels with various rim diameters, with up to seven filling rings having different diameters. Particularly for the latest low profile tires, a particularly precise adjustment of the filling ring diameter to the rim diameter is required, so that known tire inflation devices with only one or two filling rings are no longer a requirement. Does not meet. The design of the magazine means that the space required for the tire inflation device is minimal, and in particular depends on the number of available filling rings that fits in the overall height of the magazine. The tire inflation device is easy to maintain. This is because sensitive and prone components and seals are easily accessible and lightweight and can be replaced. The filling rings are transported to the filling plate and returned in an accurate and reliable manner, so that the high speed of transport is possible due to the robustness of the transport device and thus the time required to replace each filling ring Is short. The design of the magazine drive and rack guide avoids restraining forces and allows precise adjustment of the transfer position. Finally, the tire inflation device described above has the characteristics of being simple in construction and cost effective to manufacture.

DESCRIPTION OF SYMBOLS 1 Tire inflation apparatus 2 Machine frame 3 Magazine 4 Tire filling bell 5 Supporting and sealing apparatus 6 Conveyance apparatus 7 Table 8 Centering apparatus 10 Filling plate 11, 11 'Filling ring 18 Filling plate guide 20 Magazine rack 21 Magazine guide 22 Guide rail 23 Mounting rail 38 Motor 40 Transport device

Claims (18)

A tire inflation device that can supply a wheel including a wheel rim and a tubeless tire attached to the wheel rim to the tire inflation device. The tire inflation device includes a machine frame (2) and the machine frame. (2) having a tire filling bell (4) disposed above and a support and sealing device (5) for sealing the filling chamber;
The tire filling bell (4) has a filling plate (10) and a separate filling ring (11), the filling ring (11) having a plurality of interchangeable filling rings (different in diameter ). 11, 11 ') and can be moved to a centering position with respect to the axis of rotation of the wheel ,
The filling plate (10) and the first edge of the filling ring (11) arranged in the centering position can be brought into contact with each other, and the filling plate (10) is rotated together with the filling ring (11) A second edge of the filling ring (11), which can be moved along an axis and is located in the centering position facing away from the filling plate (10), is applied to the side of the tire Can
The tire inflation device has a magazine (3) including a magazine rack (20), and the magazine rack is formed by a plurality of magazine guides (21) positioned in a plurality of parallel planes intersecting the rotation axis. Each of the holders can hold the filling ring (11, 11 ') in the magazine guide (21) so that the filling ring (11, 11') is movably provided. The magazine guide (21) for each of the holders is arranged on the filling plate (10) by moving the magazine rack (20) and the filling plate (10) relative to each other in the direction of the rotational axis. A plurality of transfer positions connected to the filled plate guide (18), the magazine guide ( During the filling plate guided by 1) transporter filling ring (11) disposed within (40), and can be transported to the centering position on the filling plate (10), a tire inflation apparatus.   The magazine rack (20) can be moved to the transfer position of the magazine guide (21) in the direction of the axis of rotation by means of a magazine drive (34) arranged on the machine casing (2). The tire inflation apparatus as described.   The said magazine guide (21) arrange | positioned at the said transfer position is connected with the said filling plate guide (18) by the intermediate guide (19) fixed to the said machine frame (2). Tire inflation device.   It further comprises a guide for the filling ring (11), each guide having two parallel guide rails (17, 22), the filling ring (11, 11 ') being a frame ( 52), the frame being located on opposite sides and rotatably provided with said guide rails (17, 22) to form a positive guide (55) Or the tire inflation apparatus as described in any one of Claims 1-3 which has a sliding block.   The guide rails (17, 22) have a U-shaped contour, the hollow profile sides of the guide rails (17, 22) face each other, and the roller (55) or sliding block is filled 5. The tire inflation device according to claim 4, wherein when the frame of the ring (11) is arranged between the guide rails (17, 22), it fits into the hollow profile side.   The transport device (40) is disposed on the machine casing (2) and drives a drive head (45), and the drive head has a drive head whose drive head is parallel to the magazine guide (21). 6. Guided so as to be movable on a guide (46) and connectable to a filling ring (11) arranged in the holder in the transfer position. 6. The tire inflation device according to 1.   The conveying device has a crank mechanism body including a crank (43) and a connecting rod (44) driven by a motor (42), and the connecting rod transmits a rotational motion of the crank (43) to the driving head ( 45), wherein the crank (43) and the connecting rod (44) are arranged in a free movement region between the magazine rack (20) and the machine frame (2). The tire inflation apparatus as described.   The drive head (45) has a coupling element (50), which interacts with the counter coupling element (57) arranged on the filling ring (11, 11 '), (50) and the opposing coupling element (57) can engage or disengage the coupling element and the opposing coupling element as a result of movement relative to each other in the direction of the filling ring axis. The tire inflation device according to claim 6 or 7, which is designed as described above.   The drive head guide (46) is provided on the magazine rack (20) facing away from the magazine guide (21) on the inner side of the machine casing (2) facing the magazine rack (20). Located on the outer side, the carrier (56) is fixed to the filling ring (11, 11 '), and the carrier has the filling ring (11, 11') arranged in the magazine (3). Then, the tire inflation device according to any one of claims 6 to 8, wherein the tire inflation device grips the outside of the magazine guide (21) and supports the outer side portion of the opposing coupling element (57).   The magazine rack (20) is guided in the rack guide (28) on the machine frame (2) so that the magazine rack can move, and the magazine driving device (34) can be driven to rotate. A spindle (36) with a male thread, said spindle engaging with a nut (37) with a female thread by means of the male thread, said spindle being able to rotate said magazine rack (20) The tire inflation device according to any one of claims 2 to 9, which is supported above.   The spindle (36) supports the magazine rack (20) in a vertically suspended state, and the spindle (36) is in an axial bearing supported on a lateral member of the machine frame. The axial bearing and the lateral member (35) are provided so as to be rotatable while being fixed in the axial direction, and the center axis of the spindle (36) is loaded with a filling ring (11, 11 '). 11. Tire inflation device according to claim 10, arranged to extend near or into the center of gravity of the magazine rack (20).   A spherical bearing surface supports the axial bearing of the spindle (36) on the lateral member (35) and supports the nut (37) on the lateral beam (27) of the magazine rack (20). The tire inflation device according to claim 11, wherein a central portion of the bearing surface is located on the central axis of the spindle (36).   The filling ring (11, 11 ') has a positioning pin (70) which can be moved on the filling plate (10) by an actuator (66), one of the filling rings (11) being the filling plate (10). The tire inflation device according to any one of the preceding claims, having at least one positioning hole (71) that can be inserted when in the centering position.   The tire inflation device of claim 13, wherein a sensor (72) is disposed on the actuator (66) to record the position of the positioning pin (70).   A clamping device (68) is disposed on the filling plate (10), and the clamping device (68) includes a filling ring (11) disposed on the filling plate (10) in the centering position. The tire inflation device according to any one of claims 1 to 14, which can be clamped to the first edge of (10).   The clamping device (68) is arranged on the upper side of the filling plate (10) facing away from the filling ring (11), the clamping device being moved vertically to the filling plate (10) A clamping arm (73) capable of gripping a lower surface of the inclined clamping anchor shoulder (58) of the filling ring protruding beyond the edge of the filling plate (10); The tire inflation device according to claim 15.   The tire inflation device of claim 16, wherein the clamp anchor is formed by the carrier (56) of the filling ring (11).   Two pneumatic cylinders (15) and one hydraulic control cylinder (14) are fixed to the machine frame (2) in parallel arrangement to move the tire filling bell (4), and the control cylinder and the The piston rod (81, 82) of a pneumatic cylinder is connected to the filling plate (10), the movement of the pneumatic cylinder (15) being controllable by the control cylinder (14). The tire inflation apparatus as described in any one of them.

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